Warning light



FIG. 1 is a front elevation view of a warning light, showing my new design;

FIG. 2 is a rear elevation view thereof;

FIG. 3 is a right elevation view thereof;

FIG. 4 is a left elevation view thereof;

FIG. 5 is a top plan view thereof;

FIG. 6 is a bottom plan view thereof;

FIG. 7 is a front perspective view thereof; and,

FIG. 8 is a rear perspective view thereof.

The broken lines in the drawings are for the purpose of illustrating portions of the article that form no part of the claimed design. 

CLAIM The ornamental design for a warning light, as shown and described. 